http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Different brain states produce different waves of electrical activity, with the alert brain, relaxed brain and sleeping brain producing easily distinguishable electroencephalogram (EEG) patterns. These patterns change even more dramatically when the brain goes into certain deeply quiescent states during general anesthesia or a coma.  http://medicalxpress.com/news/2012-02-neuroscientists-link-brain-wave-pattern-energy.html Neuroscience Wed, 08 Feb 2012 06:00:01 EST news247901866